Operate a BKM-10R
A BVM whose model number ends in 1 is a display unit: it has no controls of its own, and without a Monitor Control Unit there is no way to adjust it. This is that unit — the rack-width BKM-10R, driving the BVM-20E1U. Every button does what Sony says it does, the knobs turn, and the MENU button opens Sony’s whole menu tree. Press anything; the panel on the right quotes the manual.
BKM-10R Monitor Control Unit
Rack width, 1U, 424 × 44 × 157 mm, 1.4 kg. Powered by the monitor over one D-sub 9-pin cable; controls up to 32 monitors on an RS-485 loop.
“Each of the Function buttons has a Shift On function as well as a Shift Off function. Shift On: use the function indicated below the Function button. Shift Off: use the function indicated above.”
Sony, BVM-E/F operation manual, pp. 1-41 to 1-44slot
Orange LED: function onGreen LED: knob liveKeypad: CH 1–9 direct; 0 then two digits for 10–99; 91–95 are Sony’s test patternsDrag a knob up or down, or focus it and use the arrow keys
What the picture is doing
The picture is a 240p test frame drawn in the browser, not a photograph of the 20E1U, and the effects are illustrations of what each control changes: UNDERSCAN pulls the raster in so the blanking edges show; H DELAY and V DELAY shift the raster so the sync intervals land on screen; BLUE ONLY and the R, G, B keys cut guns; MONO drops chroma; APT sharpens; 16:9 letterboxes the 4:3 tube; SAFE AREA draws the action-safe box; DEGAUSS throws the picture for a moment the way a tube does. Channels 91 to 95 call up PLUGE, 20 % gray, 100 % white, a five-step gray scale and crosshatch, which is what Sony assigns them. The menu tree follows Sony’s numbering — 100 CONTROL PRESET ADJ through 900 STATUS — and most leaves are shown rather than functional; the ones that toggle do toggle.
Everything quoted is from Sony’s BVM-14E1/14E5/14F1/14F5/20E1/20F1, BKM-10R Operation and Maintenance Manual, read in full; the three Shift-Off labels UNDERSCAN, H DELAY and V DELAY were garbled in the scan and are placed from the REMOTE function list and the panel layout. The handheld BKM-11R is a separate, smaller unit and is not modeled here. Which controllers fit which chassis is on the BKM reference; why the 1 in BVM-20E1U means this unit is needed is on the model-number page.
The BVM-20E1U → BKM cards and controllers → What the 1 means →